Some basic Twitter Bootstrap Symfony2 form customizations

forms.html.twig

{# for twitter bootstrap specifically #}
{% block field_row %}
{% spaceless %}
    <div class="control-group {% if errors|length > 0 %}error{% endif %}">
        {{ form_label(form, label|default(null)) }}
        <div class="controls">
            {{ form_widget(form) }}
            {{ form_errors(form)}}
        </div>
    </div>
{% endspaceless %}
{% endblock field_row %}

{% block field_errors %}
{% spaceless %}
    {% if errors|length > 0 %}

    {% for error in errors %}
    <div class="help-inline">
      {{ error.messageTemplate|trans(error.messageParameters, 'validators') }}
    </div>
    {% endfor %}

    {% endif %}
{% endspaceless %}
{% endblock field_errors %}

{# special errors block for form errors - at the top of the form, for example #}
{% block form_errors %}
{% spaceless %}
{% if errors|length > 0 %}
    <div class="alert alert-error" style="display: inline-block;">
    {% for error in errors %}
        {{ error.messageTemplate|trans(error.messageParameters, 'validators') }}
        <br/>
    {% endfor %}
    </div>
{% endif %}
{% endspaceless %}
{% endblock form_errors %}

{% block generic_label %}
{% set attr = attr|merge({'class': ''}) %}
{% spaceless %}
    {% if required %}
        {% set attr = attr|merge({'class': 'required'}) %}
    {% endif %}
    <label{% for attrname,attrvalue in attr %} {{attrname}}="{{attrvalue}}"{% endfor %}>{{ label|trans }}</label>
{% endspaceless %}
{% endblock %}
{# end twitter bootstrap stuff #}